如何使用界面和JPA

您可以

targetEntity

@Entitypublic class PersonEntity implements Person {    private Long id;    private Pet pet;    @Id    @GeneratedValue(strategy = GenerationType.AUTO)    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    @Override    @oneToOne(targetEntity = PetEntity.class)    public Pet getPet() {        return pet;    }    public void setPet(Pet pet) {        this.pet = pet;    }}